What is Basketball: Definition and 149 Discussions

Basketball is a team sport in which two teams, most commonly of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball (approximately 9.4 inches (24 cm) in diameter) through the defender's hoop (a basket 18 inches (46 cm) in diameter mounted 10 feet (3.048 m) high to a backboard at each end of the court) while preventing the opposing team from shooting through their own hoop. A field goal is worth two points, unless made from behind the three-point line, when it is worth three. After a foul, timed play stops and the player fouled or designated to shoot a technical foul is given one, two or three one-point free throws. The team with the most points at the end of the game wins, but if regulation play expires with the score tied, an additional period of play (overtime) is mandated.
Players advance the ball by bouncing it while walking or running (dribbling) or by passing it to a teammate, both of which require considerable skill. On offense, players may use a variety of shots—the layup, the jump shot, or a dunk; on defense, they may steal the ball from a dribbler, intercept passes, or block shots; either offense or defense may collect a rebound, that is, a missed shot that bounces from rim or backboard. It is a violation to lift or drag one's pivot foot without dribbling the ball, to carry it, or to hold the ball with both hands then resume dribbling.
The five players on each side fall into five playing positions. The tallest player is usually the center, the second-tallest and strongest is the power forward, a slightly shorter but more agile player is the small forward, and the shortest players or the best ball handlers are the shooting guard and the point guard, who implements the coach's game plan by managing the execution of offensive and defensive plays (player positioning). Informally, players may play three-on-three, two-on-two, and one-on-one.
Invented in 1891 by Canadian-American gym teacher James Naismith in Springfield, Massachusetts, United States, basketball has evolved to become one of the world's most popular and widely viewed sports. The National Basketball Association (NBA) is the most significant professional basketball league in the world in terms of popularity, salaries, talent, and level of competition. Outside North America, the top clubs from national leagues qualify to continental championships such as the EuroLeague and the Basketball Champions League Americas. The FIBA Basketball World Cup and Men's Olympic Basketball Tournament are the major international events of the sport and attract top national teams from around the world. Each continent hosts regional competitions for national teams, like EuroBasket and FIBA AmeriCup.
The FIBA Women's Basketball World Cup and Women's Olympic Basketball Tournament feature top national teams from continental championships. The main North American league is the WNBA (NCAA Women's Division I Basketball Championship is also popular), whereas the strongest European clubs participate in the EuroLeague Women.

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  1. B

    Calculating Initial Speed for an Olympic Basketball Shot

    Hi, I have a question that I can't finish, because it seems that I'm missing a particular variable. A little help would be very much appreciated. Question: An Olympic basketball player shoots towards a basket that is 5.64 m horizontally from her and 3.05 m above the floor. The ball leaves her...
  2. D

    Momentum of golf ball and basketball

    Homework Statement Place a golf ball on top of a basketball, and drop the pair from rest so they fall to the ground.The golf ball stays on top of the basketball until the basketball hits the floor. The mass of the golf ball is 0.0459 kg, and the mass of the basketball is 0.587 kg. a) If the...
  3. P

    Basketball Projectile Motion problem

    Homework Statement You throw a basketball towards a basketball hoop that is 4.92 m away from you, and 0.457 above the release point at 30 degrees above the horizontal (assume g = 10 m/s2) How fast does the ball have to leave your hand to pass through the hoop on its way down? Homework...
  4. R

    Solving an Initial Velocity Problem for a Basketball Player

    1. Homework Statement A basketball player is standing 9.5 m from the basket, which is at a height of 3.1m. she throws the ball from a initial height of 2m at an angle of 35 degrees above the horizontal. The ball goes through the basket. Determine intial velocity. 2. Homework...
  5. R

    Solving Basketball Parabola Puzzle: Initial Velocity at 35°

    Homework Statement A basketball player is standing 9.5 m from the basket, which is at a height of 3.1m. she throws the ball from a initial height of 2m at an angle of 35 degrees above the horizontal. The ball goes through the basket. Determine intial velocity. PS Assume the max height of the...
  6. K

    I give up Basketball Projectile problem.

    Homework Statement A basketball leaves a player's hands at a height of 2.20 above the floor. The basket is 2.90 above the floor. The player likes to shoot the ball at a 40.0 degree angle. If the shot is made from a horizontal distance of 6.00 and must be accurate to plus or minus .22...
  7. M

    Projectile motion question ( basketball being thrown into a hoop)

    Homework Statement A basketball shoots a ball at an angle of 55° which is 4.3m away( horizontal dist). If the ball is released from a height of 2.1m and lands in the hoop, which is 3m high. Calculate the initial speed of the ball for this shot to be successful. Homework Equations initial...
  8. W

    Basketball hangtime physics problem

    Homework Statement A basketball player grabbing a rebound jumps 75.4 cm vertically. How much total time (ascent and descent) does the player spend (a) in the top 13.3 cm of this jump and (b) in the bottom 13.3 cm? Do your results explain why such players seem to hang in the air at the top of a...
  9. C

    Projectile Motion of Basketball Shot to Ring

    Homework Statement A basketball is thrown from a height of 2.8m above the ground and goes through a basketball ring that is 3.3m above the ground. If the release velocity was 5.5 m/s at an angle of 54 degrees upwards from the horizontal, calculate the horizontal displacement the ball will...
  10. B

    Pigeon Hole Problem Involving Matching Basketball Teams?

    Suppose we have ten basketball teams, for any group of three teams we know at least two teams have not played each other. Let S be the largest set of teams such that none have played each other. Provide, with proof, the largest integer n satisfying |S| ≥ n. Can't choose a particular matching of...
  11. E

    Maximizing Basketball Shooting Accuracy: Physics Considerations

    Hello, I am designing a robot that shoots basketballs of diameter 7 in and am trying to figure out a couple things. First: I was talking to a friend and they were saying that when you shoot a ball energy gets lopped off as it is shot. I'm wondering if this is energy lost due to...
  12. K

    Shooting basketballs into a basketball hoop using projectile motion

    Hi, I need to design a robot that shoots basketballs into a basketball hoop. My original idea was that the robot will auto-target on the hoop. The hoop has reflective tape around the "square" behind it, which the robot can locate. Now, when the robot locates this square, it can...
  13. D

    Basketball Vector/Kinematics Question

    Homework Statement A basketball leaves a player's hands at a height of 2.10metres above the floor. The basket is 2.60metres above the floor. The player likes to shoot the ball at a 38 degree angle. If the shot is made from a horizontal distance of 11.00metres and must be accurate to...
  14. J

    Solving a Basketball Player's Projectile Motion Problem

    A basketball player shoots a basketball a distance of 6.5 m from the hoop releasing the ball at a height of 1.5 m above the ground. The basketball goal’s rim stands 3 m above the ground. If the player shoots the ball at an angle of 43 degree with the horizontal, what initial speed must he shoot...
  15. C

    Statistics, probability, basketball foul shots

    Homework Statement Records show that 72% of basketball foul shots attempted are successfully made during practice. Today, each of the 10 members of the team gets a practice shot. What is the probability that at least 8 team members make the shot successfully? Homework Equations...
  16. W

    Projectile Motion with Basketball

    A person walking with a speed of 1.45 m/sec releases a ball from a height of h = 1.3 m above the ground. Use the point on the ground, directly below where the ball is initially released at the origin of your coordinate system. Picture...
  17. Femme_physics

    Basketball Physics Question (kinematics, really )

    Basketball Physics Question (kinematics, really :) ) (I'll get back to electronics later... :) ) Homework Statement http://img819.imageshack.us/img819/5468/bballdrawing.jpg In this drawing is depicted a quick shot from a part in a basketball game. In the drawing you see player A throwing the...
  18. A

    How Much Does a Basketball Player Displace the Rim When Dunking?

    Homework Statement A basketball player dunks the ball and momentarily hangs from the rm of the basket. Assume that the player can be considered as a 95.0kg point mass at a height of 2.0m above the floor. If the basket rim has a spring constant of 7.4 x 10^3 N/m, by how much does the player...
  19. I

    Basketball shot with just x and y distance and angle

    Homework Statement At its farthest point, the three-point line is 7.24 meters away from the basket in the NBA. A basketball player stands at this Int point and releases his shot from a height of 2.05 meters at a 35.0 degree angle. The basket is 3.05 meters off the ground. The player wants...
  20. M

    Projectile basketball question

    Homework Statement A regulation basketball net is 3.05 m above the floor. The three point circle is about 4.6 metres from the basket- the player 5.0 m. At what speed should the player shoot if the ball is released at a height of 2.25 m at 45 above the horizontal to score three points...
  21. M

    Optimizing a Free Throw: Solving for Initial Speed and Angle

    Homework Statement Goal: Find an equation for making a free throw. Directions: Write an equation for v in terms of g, x, y, theta_i, z eliminating t. Then seperately write z in terms of r, R, and theta_f and also write theta_f in terms of y, x, and theta_i. Variables: v = initial speed...
  22. B

    Basketball player shooting ball, finding velocity for a no backboard shot

    Homework Statement An h1 = 2.13 m tall basketball player wants to make a basket from a distance d = 10.8 m, as seen in the figure. If he shoots the ball at α = 47.2° angle, at what initial speed must he throw the basketball so that it goes through the hoop without striking the backboard...
  23. C

    Basketball Kinematics question

    [b]1. Homework Statement [/b A basketball player is approaching the basket at a velocity of 6m/s when he jumps into the air to perform a slam dunk. Calculate the vertical velocity component required to lift the player 1m above the ground. Determine the distance from the basket needed for the...
  24. P

    Force exerted by a Basketball

    Say I threw a Basketball at a friend and I wanted to calculated the force it exerted on him, could I do the following? (from an introductory Physics point of view) Use: F = m x a 1. Weigh the ball 2. Measure the distance between the ball and him, throw the ball and record the time it...
  25. J

    Finding initial velocity of basketball

    A basketball player makes a shot from a height of 2.50 m at an angle of 30 degrees above the horizontal. The horizontal distance between the player and the hoop is 6.00 m. The hoop is 3.00m above the ground. Find the magnitude of the initial velocity of the ball which will cause it to go...
  26. P

    Motion in two dimensions basketball dunk

    Homework Statement A basketball star covers 2.40 m horizontally in a jump to dunk the ball (see figure). His motion through space can be modeled precisely as that of a particle at his center of mass. His center of mass is at elevation 1.02 m when he leaves the floor. It reaches a maximum...
  27. N

    Calculating Max Height of a Bouncing Basketball

    Hey guys, I was wondering, is there a formula I can use to calculate the height of a which a basketball can achieve in a controlled environment situation, therefore, factors such as wind, debris, spin do not influence the results provided. A brief explanation of how the formula works would be...
  28. S

    Physics in the sport of Basketball

    New member, so first of all Hello all! Writing this paper on the topic of physics involved in the sport of basketball. There are numerous factors involved and I thought it would be fun for everybody to contribute a few factors. Such as but of course not limited to projectile motion (make...
  29. R

    Basketball roster probability problem

    Homework Statement A basketball coach has 10 boys and 10 girls on his roster. In how many ways can the coach partition the group of 20 into 4 teams of 5 students such that there are at least 2 boys and 2 girls on each team ? The Attempt at a Solution I tried nCr(10,3)*nCr(10,2) +...
  30. G

    How Fast Must a Basketball Player Jump to Achieve a 98.2 cm Vertical Leap?

    Homework Statement A 98.6 kg basketball player can leap straight up in the air to a height of 98.2 cm, as shown below. The player bends his legs until the upper part of his body is dropped by 67.0 cm, then he begins his jump. With what speed must the player leave the ground to reach a height...
  31. majormuss

    How High Did the Basketball Player Jump?

    Homework Statement A basketball player jumped straight up to grab a rebound. If she was in the air for 0.80 second, how high did she jump? (1) 0.50 m (3) 1.2 m (2) 0.78 m (4) 3.1 m Homework Equations d=Vit + 1/2at^2 The Attempt at a Solution my calculations lead to '4' as my...
  32. O

    Impact generated by a futsal ball vs. basketball ball at a wall

    Would anyone only help me to compare the impact or damage of a Futsal ball against a wall versus a basketball ball. We have a new sport growing in popularity in the USA named Futsal. This sport is very popular worldwide and should soon become a Olympic Sport. In a few words, Futsal is soccer...
  33. C

    Schools Can I Play Basketball & Double Major in Science?

    Hello, Some one told me that I should not try and play basketball at college and double major in Chemistry and Physics; that I should either pick one or the other. I really love the sport and the sciences and was devastated when they advised me to have to choose between things that I love...
  34. F

    Calculating Basketball Velocity & Height in a Hot Tub

    So if you have a typical basketball "mens". http://en.wikipedia.org/wiki/Basketball_(ball ) so, my friends and I were in a hot tub and one brought in a basketball. They were pulling the basketball to the bottom of the hot tub and we noticed that it did not shoot out as high as when we...
  35. L

    Equation for a Basketball Shot

    Homework Statement I don't know what equation to use. i am trying to find out the velocity need to make a shot. the conditions are ideal. initial height: 6 feet initial vertical velocity:unknown angle of trajectory: 45 degrees range: 14 feet time:2 seconds basketball hoop height: 10...
  36. I

    For which angle is the speed of a basketball more important to score?

    Homework Statement "A 3-point jump shot is release 2.2 m above the ground, 6.02 m from the basket, which is 3.05 m high. For launch angles of 30 degrees and 60 degrees find the speed needed to make the basket." For which angle is it more important that they player get the speed right? To...
  37. M

    Jump Shot Effect on Basketball: Does It Help?

    Hi, I was wondering if the act of jumping itself has an effect on the ball as it is released out of the players hands(ex. momentum etc.). I know that the increased height decreases the chance of the ball from being blocked, but i was wondering if it does more than that. Thank You
  38. B

    Pendulum & Basketball Lab(Accelration due to gravity)

    Homework Statement Hey guys, i had to do a lab in class where i set up a lab using a steel ball and tied to a string and tied to a stand. I had to release the pendulum from a 10 degree angle and measure 20 cycles of the pendulum. For the second lab, i had to drop a basketball from 3 floors and...
  39. S

    How do basketball players jump straight up into the air?

    The question asks to describe in terms of physics how basketball players can jump straight up into the air. I also have to show free body diagrams of the forces on the ground and on the player. The basketball player has gravity and normal forces acting on him and I am assuming that the rest...
  40. M

    Basketball game problem- projectile motion

    Homework Statement Basketball player throws the ball form the middle of the court one second before the game ends. How much must the initial speed of the ball be and at what angle it must be thrown, if it should hit the basket at the exact time of siren without preceding reflection from board...
  41. P

    Basketball player shoots a ball, find angle, parametrics

    Homework Statement A basketball player shoots a ball with a speed off 25 ft/sec from a point 15 ft horizontally away from the center of the basket. The basket is 10ft away above the the floor and the player releases the ball from a height of 8ft. At what angle should the player shoot the...
  42. I

    Discover the Solution to a Challenging Basketball Physics Problem

    Homework Statement A basketball player who is 2.0 m tall is standing on the floor L = 13.0 m from the basket. If he shoots the ball at a 43.0deg angle with the horizontal, at what initial speed must he throw so that the ball goes through the hoop without striking the backboard? The...
  43. A

    Thermodynamis of air in a basketball

    Homework Statement A player bounces a basketball on the floor, compressing it to 80.0 % of its original volume. The air (assume it is essentially N_2 gas) inside the ball is originally at a temperature of 20.0 C and a pressure of 2.00 atm. The ball's diameter is 23.9 cm Temperature at...
  44. A

    Conservation of energy of a basketball

    Homework Statement A child rolls a 0.600-kg basketball up a long ramp. The basketball can be considered a thin-walled, hollow sphere. When the child releases the basketball at the bottom of the ramp. it has a speed of 8.0 m/s. When the ball returns to her after rolling up the ramp and then...
  45. Ivan Seeking

    Seventy-three-year-old college basketball player disqualified

    ...because he bombed in a Spanish class! Bummer! http://www.knoxnews.com/news/2009/feb/20/73-year-old-basketball-player-ruled-ineligible/
  46. E

    Independent statistics: Basketball?

    Hi, I'm a bit stuck on this problem A basketball player misses 30% of his free throws. He ends up in a situation where he has the potential to shoot two penalty shots if and only if he lands the first shot (called a one and one, I believe). The outcome of the 2nd shot is independent of the...
  47. Redbelly98

    Women's College Basketball Rivalry: UConn vs. Tennessee

    I know this is a long shot here, but is anyone else watching UConn vs. North Carolina on ESPN2 tonight? Right now it's 8-4 UConn, 17:33 left in 1st half.
  48. 0

    Rebounding: Basketball Player Exerts 280lbs of Force on Floor

    A 250 pound basketball player pushes against the floor with an additional force of 30 pounds in order to accelerate upwards after the rebound. The floor exerts a force back upon the player of ______ A) 30 pounds B) 220 pounds C) 250 pounds D) 280 pounds E) not enough info to tell I...
  49. Ivan Seeking

    Medical Accident leaves basketball player with no memory

    An interesting local story in the news. http://www.katu.com/news/local/36581724.html
  50. T

    Chances of picking a basketball team

    Homework Statement A 3 person basketball team consists of a guard, a forward and a center. If a person is chosen randomly from each of 3 different such teams, what is the probability of selecting a complete team? Homework Equations The Attempt at a Solution Well my reasoning...
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